Abstract This paper introduces a neural network (NN) approach for fitting the Lee-Carter (LC) and Poisson model on multiple populations. We develop some NNs that replicate structure of individual LC models allow their joint by simultaneously analysing mortality data all considered The NN architecture is specifically designed to calibrate each using available information instead population-speci...

tology, Kyungpook National University Hospital, 50 Samdeok 2-ga, Chung-Gu, Daegu, South Korea, 700-721 ([email protected]). Author Contributions: Dr W. J. Lee had full access to all of the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Park, S.-J. Lee, D. W. Kim, B. S. Kim, H. Y. Kim, Choi, and W. J. L...

Perfect weighted coverings of radius one have been often studied in the Hamming metric. In this paper, we study these codes in the Lee metric. To simplify the notation, we use a slightly different description, yet equivalent. Given two integers a and b , an (a, b)-code is a set of vertices such that vertices in the code have a neighbours in the code and other vertices have b neighbours in the c...

Lee Hood took to mountain climbing naturally, while he was growing up in rural Montana. The technical climbing he still practises consists generally of “going up vertical cliff faces.” His hobby could be an apt metaphor for a career in biology marked by unorthodox approaches to daunting problems. In the 1960s, Hood became the first biologist to seriously bridge the gap between biology and techn...

Susan Lindquist was internationally renowned for her pioneering discoveries that transformed our understanding of protein homeostasis and the wide array of biological processes it governs. She developed cutting-edge genetics and cell biology technologies; applied them on diverse organisms, including yeast, fruit flies, plants, cavefish, and humans; and tackled and solved previously intractable ...

The flow of an incompressible fluid over an obstacle will produce an oscillation in which buoyancy is the restoring force, called a gravity wave. For disturbances of this scale, the atmosphere may be treated as dynamically incompressible, even though there exists a mean static upward density gradient. Even in the linear approximation—i.e., for small disturbances—this model explains a great many...